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A heater for providing steady-temperature heated water for domestic hot water or hygienic purposes. Water is heated in a drum-shaped tank that is divided into two chambers by a piston that can slide longitudinally within the tank.. Attached to the tank is a reverse value that can direct cold water from an inlet into either chamber and direct heated water from the other chamber to an outlet leading to a heated water use. Electric component and a cycle regulator control the direction of water flow through the reverse valve and the direction of motion of the piston. When there is a demand for heated water, the cycle regulator causes the piston to move to expel heated water from one chamber while concurrently cold water enters the other chamber. After heated water is expelled from that chamber, the cycle is reversed. Because cold water and heated water are in separate chambers steady-temperature heated water can be maintained. Either electricity or gas can be used in heat water in the tank. When the use of the heated water is for an enema, a flexible connection means, attached to a handgrip and nozzle, is attached to the outlet. When the water heater is used for domestic hot water, the tank is much larger than when used as an enema device. |
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